<!DOCTYPE html>
<html>

<head>
    <meta charset="UTF-8">
    <title>Hello World案例</title>
    <script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
</head>

<body>
    <div id="app">
        <p>{{ message }}</p>
    </div>
    <script>
        const vm = Vue.createApp({
            setup() {
                return {
                    message: 'Hello World!'
                }
            }
        })
        vm.mount('#app')
    </script>


</body>

</html>